1 box cake mix
Prepare as directed & bake in 3 round cake pans.

Icing:
1 (8oz) Cool Whip
1 box confectioner's sugar
1 (8oz) pkg cream cheese

Mix together icing ingredients.

Topping:

1 can blueberry pie filling

Spread icing over one layer of cake & then spoon pie filling on top of icing. Repeat for each of the 3 layers.

Refrigerate until ready to serve.